Are you trying to teach your Schweizerischer Niederlaufhund to sit? The talent of sitting up is quite easily taught to very small dogs, though much larger canines are another story. It is challenging for them to maintain their equilibrium.
Teach Your Schweizerischer Niederlaufhund to Sit: Groundwork
Sitting is one of the first skills that should be taught to your Schweizerischer Niederlaufhund and lays the ground work for numerous other tricks.